Igniter-tube for internal-combustion engines.



W. R. KAHLENBERG. IGNITER TUBE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JULY 10. I916.

Patented July 10, 1917.

I. H m a 6 JHIII llNlTE TATE PATENT @FFEQE.

WILLIAM R. KAHLENBERG, OF TWO RIVERS, WISCONSIN, ASSIGNOR TO KAHLENBERG V BROS. (30., OF TWO RIVERS, WISCONSIN.

IGNITER-TUBE FOR INTERNAL-COMBUSTION ENGINES.

Application filed July 10, 1916.

Z '0 all whom it may concern."

Be it known that I, \VILLIAM R. KAnLnN- BERG, a citizen of the United States, and resident of Two Rivers, in the county of Manitowoc and State of lVisconsin, have invented certain new and useful Improvements in Igniter-Tubes for Internal-Combustion Engines; and I do hereby declare that the following is a full, clear, and exact description thereof.

The present invention relates to new and useful improvements in igniters for internal combustionengines, more particularly of the semi-Diesel type.

It is the object of the present invention to provide an improved igniter structure of the hot bulb type, and it is more specifically an object to provide a means for applying the flame of a torch to the bulb to procure initial heating thereof.

With the above and other objects and advantages in view, the invention resides more particularly in the novel combination, arrangement and formation of parts, more particularly hereinafter described and particularly pointed out in the appended claims.

In the drawings, the figureillustrates a sectional View of the head portion of the cylinder of an internal combustion engine with the improved hot bulb structure associated therewith.

Referring now more particularly to the accompanying drawings 5 designates the cylinder of an internal combustion engine in which is disposed the piston 5 having its inner end shaped to conform to the shape of the adjacent portion of the cylinder head 6, which head is formed with an ignition chamber 7 of considerably lesser diameter than the diameter of the cylinder and communicating with the cylinder through .a restricted neck portion 8. Disposed in the outer end of the chamber 7 is a hot bulb 8 comprising a tubular body closed at one end and slightly taperingly enlarged toward its open end and provided with an annular flange 9 at said open end which has its outer edge portion engaged in a recess 10 in the cylinder head and in a recess 11 in a cap member 12 which is fastened to the cylinder head by bolts 12 passed through said cap member into the cylinder head, the hot bulb and its flange thus forming a closure for the ignition chamber. The usual fuel inlet nozzle 13 extends through the wall of the Specification of Letters Patent.

Patented July 10, 1917.

Serial No. 108,262.

bulb 8.

For initially heating the hot bulb, a cen tral portion of the cap plate 12 is formed with a dome l t, and the sides of this dome are provided with a pair of preferably diametrically opposed ports 15, through one of which is passed a curved spout member 16 which is secured within the dome by a screw 16 passed through the top of the dome and threadedly engaged in a boss 17 on the said spout. The spout extends diagonally with. respect to the axis of the hot bulb, and its inner end terminates adjacent one side of the mouth of the hot bulb. Thus by applying a torch to the mouth of the spout, the flames therefrom will pass through the spent and discharge against the wall of the hot bulb adjacent the inlet nozzle 13. The

- flames and waste gases will then be directed around the bottom of the hot bulb, and will pass transversely of the inner end of the spout, and outwardly through the open port 15 as indicated by the arrows in the figure. Thus the discharge of flame from the hot bulb will assist in heating the inner end of the spout to thus insure a maximum heat applied to the wall of the hot bulb.

By the foregoing structure an exceedingly simple and readily assembled structure is procured which is of maximum efliciency. Inasmuch as a reduced ignition chamber is utilized, the head of which is not necessarily provided with a water jacket, a hot bulb of minimum length may be provided and by this arrangement, together with the provision of a spout discharging diagonally into the hot bulb, the necessity of a partition in the hot bulb to procure a circulation of flame therethrough is obviated.

Although the spout has been described as discharging against that side of the hot bulb adjacent the inlet nozzle, the exceedingly great degree of heat imparted to the hot bulb in the present structure does not render this arrangement essential, and it may in certain instances be desired to direct the mouth of the spout toward another portion of the hot bulb. To assist the circulation of flame around the interior of the hot bulb and finally outward, the discharge end of the spout 16 is preferably provided with series of perforations 18.

I claim:

1. The combination with an ignition chamber, of a. hot bulb extending thereinto, a dome shaped cap disposed over the mouth of the hot bulb and provided with ports, and a spout projected through one of the ports and arranged to discharge into the hot bulb.

2. The combination with an ignition chamber, of a hot bulb extending thereinto, a dome shaped cap disposed over the mouth 3 of the hot bulb and provided with ports,

and a spout projected through one of the ports and arranged to d1scharge diagonally against one slde wall of the tube.

3. The combination with an ignition chamber, of a hot bulb extending thereinto,

a 'dome shaped cap disposed over the mouth of the hot bulb and provided with a pair of ports in diametrically opposed side portions, and a spout having its mouth disposed adjacent oneo f the ports and ex tend-ing diagonally of the axis of the hot bulb with its inner end disposed adjacent one side of the mouth thereof.

4.. The combination with an ignition chamber, of a hotbulb disposed. therein, an annular flange at the mouth of the hot bulb closing one end of the chamber, a cap plate disposed on said flange to secure the hot bulb, the central portion of said cap 0 being of dome shape and provided with ports, and a spout extending from one of said ports and arranged to discharge into the hot bulb.

5. The combination with an ignition chamber of a hot bulbextending thereinto, a dome shaped cap disposed over the mouth of the hot bulb and provided with a pair of ports in diametrically opposed side portions, a curved spout removably disposed in one of said ports, a boss formed on the upper portion of said spout, and a fastening element passed through the top of the dome shaped cap and secured in the said boss; whereby to detachably retain the spout within the dome shaped cap.

6. A device'of the class described comprising a hot bulb open at one end, a dome shaped cap disposed over the open end of the bulb and provided with a pair of ports,

a spout extending through one of the ports, F

topics of this patent may -be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, 13.13. 

